AppNexus Inc.
TypeSubsidiary
IndustryOnline advertising
Founded2007 (2007)
HeadquartersNew York City, United States
Area served
Worldwide
Key people
Michael Rubenstein (president)
ProductsInfrastructure as a service
Ad serving
Analytics
OwnerMicrosoft Corporation
Number of employees
1000+
ParentXandr

Xandr, formerly known as AppNexus, is an American multinational technology company operating a cloud-based software platform that enables and optimizes programmatic online advertising.[1] Headquartered in the Flatiron District of New York City, the company has 23 offices in North America, Latin America, Europe, Asia and Australia.

AppNexus offers online auction infrastructure and technology for data management, optimization, financial clearing and support for directly negotiated advertising campaigns. It has both demand-side platform (DSP), supply-side platform (SSP), and ad serving functionalities. It integrates with advertising sources including Google's "Authorized Buyers" ad exchange, Magnite, Pubmatic and other aggregators.[2][3] It operates out of multiple data centers, including one in Amsterdam serving Europe and the Middle East, in a facility shared with Equinix.[4]

In 2016, AppNexus was ranked #21 on Forbes Magazine's "The Cloud 100" list.[5]

In June 2018, AT&T announced it was acquiring the company and putting it under its Xandr division as a subsidiary.[6] AppNexus was reportedly sold for $1.6 billion, while most news outlets speculated the company did not sell for less than $2 billion.[7]

In October 2019, Xandr purchased Clypd, a privately-held technology company focused on enabling programmatic buying of linear television advertising.[8]

In December 2021, AT&T announced that they had agreed to sell Xandr to Microsoft for an undisclosed price, subject to customary closing conditions, including regulatory reviews.[9]

Founders and financing

AppNexus was founded by former Right Media staff, CTO Brian O'Kelley, and Mike Nolet, product manager and director of analytics,[10] with Michael Rubenstein, a former vice president and general manager at Google DoubleClick, who joined AppNexus as president in September 2009.[11] The company was financially backed by Microsoft, Khosla Ventures, First Round Capital, Venrock,[12] Kodiak Venture Partners, Marc Andreessen, Ben Horowitz, and Ron Conway; as of 2015 the company had raised $250 million in financing. O'Kelley stepped down as CEO in October 2018.[13]

References

  1. ↑ Stephanie Clifford (2010-03-12). "Instant Ads Set the Pace on the Web". The New York Times. Archived from the original on 17 March 2010. Retrieved 2010-03-12.
  2. ↑ AppNexus (2010-03-12). "AppNexus Officially Launches Ad Platform Fueling the Real-Time Bidding Revolution in Display Advertising". Press release (Press release). PR Newswire. Archived from the original on 22 March 2010. Retrieved 2010-03-12.
  3. ↑ "AppNexus Expands Video Buying, Adds New Video Demand Partners". www.mediapost.com. Retrieved 2016-05-22.
  4. ↑ Liz Gannes (2010-10-05). "AppNexus Raises $50M for Real-time Ad Platform: Tech News and Analysis «". Gigaom.com. Retrieved 2011-05-11.
  5. ↑ "The Cloud 100". Forbes. Retrieved 17 November 2016.
  6. ↑ "AT&T to Acquire AppNexus". www.businesswire.com. 25 June 2018. Retrieved 23 December 2019.
  7. ↑ "AT&T Will Acquire AppNexus | AdExchanger". AdExchanger. 2018-06-25. Retrieved 2018-07-13.
  8. ↑ "Xandr Acquired Clypt in Move to Build Connevted TV Empire". 18 October 2019..
  9. ↑ Foley, Mary Jo (December 21, 2021). "Microsoft to buy Xandr ad marketplace from AT&T". ZDNet. Retrieved December 21, 2021.
  10. ↑ "Who We Are". AppNexus. Archived from the original on 17 May 2011. Retrieved 2011-05-11.
  11. ↑ Archived December 12, 2010, at the Wayback Machine
  12. ↑ "AppNexus Secures $8 Million in Series B Funding". Pr-inside.com. Archived from the original on 2012-06-14. Retrieved 2011-05-11.
  13. ↑ Brian O’Kelley Steps Down As AppNexus CEO Published by adexchanger.com on October 5, 2018, retrieved on September 11, 2019
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